[ADD] Maven: added maven release plugin
[ADD] Maven: added maven profile "release"
[MOD] Changed newlines in basex-core/pom.xml; changed namespace declaration in pom.xml files to minimize differences when maven release plugin is used
[MOD] Maven: added prefix for commits of maven release plugin
[ADD] Maven: added SCP URL of BaseX Maven repository
[MOD] New pom.xml, containing mvn release and SSH deployment
[MOD] pom.xml updated: deployment via SSH